Alexander w



A. w eonoou. HANGER FOR SLIDING DOORS.

APPLICATION FILED DECJI. l9l8- 1,312,973. Patented Aug. 12, 1919.

run COLUMBIA PLANOGRAPII co.. WASHINGTON. n. c.

ALEXANDER W. GORDON, OF CROSSFIELD, ALBERTA, CANADA;

HANG-ER FOB; SLIDING DOORS.

Specification of Letters Patent.

Applicationfiled ecember 11, 1918. Serial No. 266,360.

To all whom it may concern: v r

Be it'knownthat I, ALEXANDER Gon DON, citizen of the Dominion of Canada, residingat 'Crossfield, in the Province of Alberta and Dominion of Canada, have invented certain new and useful Improve-.- ments in Hangers for Slidlng Doors, of

which the following is a specification.

This invention relates to means for hanging sliding doors and is intended more particularly for use upon car doors. The object of the invention is to provide simple and inexpensive means whereby the door will be firmly supported and may be freely moved from open to closed position and the frictional wear upon the moving parts will be minimized.

The invention is illustrated in the accompanying drawings in which:

Figure 1 is an elevation of a car door mounted in accordance with my invention; Fig. 2 is a transverse vertical section;

Fig. 3 is an enlarged detailed section of the track and one of the rollers.

In carrying out my invention I provide, above the door opening and parallel with the top of the same, a series of freely rotatable rollers and I secure to the upper end of the door a track which is constructed to pass around the rollers and rest upon two or more of the same. In the accompanying drawings, the reference numeral 1 indicates a freight car and 2 indicates a door mounted upon the outer side of the car to cover the door opening. On the side of the car, above the door opening and parallel with the top of the same and extending to one side of the door opening, I provide a plurality of rollers 3 each of which is constructed with an integral rearwardly extending hub 4: through which a securing pin or bolt is inserted to pass through the side of the car and be secured at its inrmer end as indicated most clearly in Fig. 3. The body or main web of the roller extends radially from the outer end of the hub 4 and at the outer edge of the said body or main web is an annular flange 5 which projects forwardly or outwardly from the said web, the circumferential surface of the said flange being smooth and extending parallel with the axis of the roller in transverse section thereof, as clearly shown in Fig. 3. The track comprises a substantially U-shaped body having its outerside 6 imperforate and of a length approximately equal: to the. width of the door. 7 From the upper and lower edges'of the outer side 6 of the track extend the upper meE..;,

Patented Aug. 12, 1919. 1

and lower trackmembers 7.. which project inwardly above and below the'roller and have their inner edges turned inwardly to provide retaining flanges 8 which play in the space between-the back of the roller and the side of the car or other structure. From the lower side of the track, brackets or lugs 9 depend and these brackets or lugs are arranged in pairs adapted to fit against the inner and outer faces of the door, respectively, and be secured thereto by bolts or similar devices as shown in Figs. 1 and 2. It is to be noted that the width of the track is greater than the width of the roller and the space between the free edges of the flanges 8 is also greater than the diameter of the hub of the roller, so that the track may rock to some extent, as indicated by dotted lines, relative to the roller and the manipulation of the door be thereby facilitated.

It is thought that the operation of the improved door mounting will be readily understood. As shown in Fig. 1, the track extends over the distance defined by four of the rollers, but this proportion of parts is immaterial although it is essential that the track at all times be in engagement with at least two rollers. The weight of the door is borne by the rollers through the upper cross member 7 of the track resting upon the rollers and, as the rollers are freely rotatable, in order to push the door to either closed or open position it is necessary only to exert a' slight force upon the proper edge of the door. It may sometimes be found desirable to exert a slight lifting force upon the door in order to clear the lower edge of the same or for some other reason, and in this event the lower member 7 of the track will bear against the lower portions of the rollers and the door may then move with a minimum amount of friction. My improved mounting is obviously simple in its construction and may be applied to a car, barn or other structure at a very low cost. The track will move readily over the successive rollers and will firmly support the door while permitting free opening or closing movement of the same and will also accommodate the lateral shifting of the door which is sometimes necessary or desirable in order to make the door fit closely to the side of the car or building.

Having thus described the invention, what is claimed as new is:

A door mounting comprising a plurality of rollers arranged on a line parallel with the top of the door opening and each consisting of a web having a hub projecting rearwardly from its center and an annular tread flange projecting forwardly from its edge, and a track secured to the upper edge of the door and consisting of a central strip disposed vertically in front of the rollers, track flanges extending rearwardly from the upper and lower edges of said strip to pass above and below the rollers, and retaining flanges extending from the rear edges of the tracli flanges toward the hubs of the rollers and terminating short of said hubs, the height of the central strip being greater than the diameter of the rollers, the width of the track flanges being greater than the width of the tread flanges of the rollers, and the lower edge of the door being free whereby limited transverse rocking of the door is per.

mitted.

In testimony whereof I afiix my slgnaturei ALEXANDER W. GORDON. [L.'s.]

copies of this patent may be obtained for five cents each, by addressing the Commissioner .of Patents. Washington, D. G. 

